In order to obtain virus-free plants through tissue culture the best method is :
- protoplast culture
- embryo rescue
- anther culture
- meristem culture
The Correct Option is D
Solution and Explanation
In order to obtain virus-free plants through tissue culture, the best method is meristem culture. Meristem tissue is the region of the plant where cell division occurs, and it is less likely to harbor viruses compared to other plant tissues.
Therefore, the correct option is (D): meristem culture
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Concepts Used:
The Respiratory System
Human Respiratory System is a compound biological system of organs and tissues that helps in gaseous exchange. The system includes airways, lungs, and blood vessels. Its core function is to introduce oxygen and expel carbon dioxide from the body. The atmospheric air is continuously pumped in and out through a system of pipes which are called the conducting airways. There are a great number of muscles and blood vessels involved in the whole process of respiration.
Features of Human Respiratory System:
- The respiratory system is essential for inhalation of oxygen and transportation of the same to the different parts of the body where it is used for cellular respiration.
- The design of the lungs is created in a manner that helps in gaseous exchange in an efficient manner. The other parts of the respiratory system such as the nose, pharynx, larynx, trachea, and bronchi help in the process of bringing in oxygen to the lungs and taking carbon dioxide out of it.
- There is an arrangement of muscles such as the diaphragm and intercostal muscles that aid in the process of human respiration.